Valve.



J. A. KEISTEH.

` VALVE.

APPLCATION FILED APR. 5. |917.

Patented Dee. 4,1191?.

'diameter than the valve-stemt? encircled by 4spring 21. f The air that is forced into cup '15l freelyppasses through openinvs into 4V '.the .hollow ,interior of stem 2 andcthencc to .tiro l.' f

Furthermore', it will be observed that "spring 2l impin'ges upon the bottom 16 of vcup`l.''an df1tits other end abats collar 8,'

and that the said spring is longer than fvalvestem 7, by which itresults that if snll- "centair-premura is applied to the exterior L .of the valve to force it strongly in the haeltv gf wand direction against the pressure of sprin'gl 21,71tcan not be forced any farther than to 'ajpointbwhere-vulvc-steln? strikes thc botthe wearingou't ,olf-spring 2l by .undue comprssiofn{blita1so prevents the possibility of collarli ibcing-,prcssed so` far inward ns to .-fsentulpon shoulder Q3.

i .ln practice it hasbeen found that this construction, with the permitted wide openA 3 1.' inglat `i-'alve-seai, ll by the thrusting away therefrom ofthe gasket 10, allows much jmorera'pid inflation of a tire than with .5 i valvcshcrctof'oie commonly1 in use. Motori ists frequentlyr find it necessary, also, to dezflute tires, and in so doing must either l tediously hold pressure upon a valve to kee 530':l it open until all the air has escaped or witii' dilliculty remove the center of the valve. .In'the use of the present invention, however, thisioantbc accomplished -in the quickest and. 'easiestv manner jpossible by unseren/ing thev lbodyj lfrom the stem 2, which` allows allv lthe air rapi'dlyt-o exhaust through 4stem 2.

l The .small valve parts are not disturbed when body flisl'thus removed, becausethey i are talien'ol'with' it even while cap 6 rel* mains in place. l

This shows, also, the facility with which these valves as a whole may be appliedto any ordinary; stem not having a valve in it, as such parts are made of standard sizes, I 5 and these valves are applied by merely screwing body l upon stem 2.

The,wearing out of a spring like spring Zlby undue pressure l(which undue presi 'S11 sure is. prevented by the check constructiont0 provided" by ithe construction lherein shown l it allows bubblinnr of'ar through'the valve press'u'rcg as when' tires have' lnilated lfor shipment.

form,--arrangement,' order', or use of'part's,

i A'as' 4itis evident that many minor -chiuuges` 4 'proportioned to the depth ofthe cu andwdeseribed) renders a valve ineflicientras may be made ltherein ywithout departing from the spint of this invention.

I claim:

y1. Avtlibular member internall threaded Vbody poi-tion of said cup l i in accd -Irelation to the nteriorof'sai sp i .ber to thereby provide. an annular space thercuround and having an opening in its -side which establishes commumcatron between thc interior of thccup and the am `nular space, a comlllessible 'gasketinV said -annular space between. the 'cupand the tubular member adapted to form an airtight joint betweenthetop of the valve stem ular mem# and the tubular member :when the tubular member is screwed upon the valvestem, u valve seat formed upon the-tubular member. outwardly of the cu a valve coacting therewith, aspx-ing sente upon' the bottom of the cup and acting a ainst said valve, and means carried by the va veffor engaging the bottom of the cup, the length of said mea-ns being so that the said means engages t c bottom o the cup before the spring isiclos'ed.

2. A tubular member internally threaded at its lower end for engagement with thev usual valve stemvof a tire, 'a cupv havin a closed bottom threaded into' Said tubu r member above the` lower end there'f, the

bodyportion -of said-cup lying in spaced relation to the interior. ofsaid tubular mem ber to thereby provide an Vannular-space therearound, a' compressible gasket in said annular space between the cup andjthe tubular member adapted to form an air tight joint between .the top `of the valve stem and the tubular member when the tubular member is screwed upon thevalve stein, said cup havin Iajlieral o enings formed in its wall whici establis communication between Vthe 'interior'o'f the cup and thc space between the cup and the tubular member, a valve seat formed upon the tubular mem-l ber outwardly of thecup,.arvalve coating' therewith, a central ,stem dependingfrom vthevalva, a sprin encircling said stem and bearing between t evalve and the `bottonr of the cup, thelen'gthrof'said-stem bein sov proportionedgto the depthof the cup -t e cup the said stem engages tliebottom of before ',the; spring '11s closed.

signature.

. 11 In testimonywhereof-I hereunto-nuit myl i i JOHN A. KEIs'rEn. 

